<template>
	<!-- currentInfo不为空的时候再渲染界面 -->
	<view class="preview" v-if="currentInfo">
		<swiper circular="true" :current="currentIndex" @change="changeSwiper">
			<swiper-item v-for="(item, index) in classList" :key="item._id">
				<!-- 节约流量的方式 -->
				<image v-if="readImgs.includes(index)" @click="maskChange" :src="item.picurl" mode="aspectFill"></image>
			</swiper-item>
		</swiper>

		<!-- 遮罩布局 -->
		<view class="mask" v-show="maskState">
			<!-- #ifndef MP-TOUTIAO -->
			<view class="goBack" @click="goBack" :style="{ top: getStatusBarHeight() + 'px' }">
				<uni-icons type="back" color="#fff" size="20"></uni-icons>
			</view>
			<!-- #endif -->

			<view class="count">{{ currentIndex + 1 }} / {{ classList.length }}</view>

			<view class="time">
				<uni-dateformat :date="Date.now()" format="hh:mm"></uni-dateformat>
			</view>
			<view class="date">
				<uni-dateformat :date="Date.now()" format="MM月dd日"></uni-dateformat>
			</view>

			<view class="footer">
				<view class="box" @click="clickInfo">
					<uni-icons type="info" size="28"></uni-icons>
					<view class="text">信息</view>
				</view>
				<view class="box" @click="clickScore">
					<uni-icons type="star" size="28"></uni-icons>
					<view class="text">{{ currentInfo.score }}分</view>
				</view>
				<view class="box" @click="clickDownload">
					<uni-icons type="download" size="23"></uni-icons>
					<view class="text">下载</view>
				</view>
			</view>
		</view>
		<!-- 壁纸信息 -->
		<uni-popup ref="infoPopup" type="bottom">
			<view class="infoPopup">
				<view class="popupHeader">
					<view></view>
					<view class="title">壁纸信息</view>
					<view class="close" @click="clickInfoClose">
						<uni-icons type="closeempty" size="18" color="#999"></uni-icons>
					</view>
				</view>
				<scroll-view scroll-y="true">
					<view class="content">
						<view class="row">
							<view class="label">壁纸ID：</view>
							<text selectable="true" class="value">{{ currentInfo._id }}</text>
						</view>
						<view class="row">
							<view class="label">发布者：</view>
							<text class="value class">{{ currentInfo.nickname }}</text>
						</view>
						<view class="row">
							<view class="label">评分：</view>
							<view class="value roteBox">
								<uni-rate readonly touchable :size="18" :value="currentInfo.score" />
								<text class="score">{{ currentInfo.score }}分</text>
							</view>
						</view>
						<view class="row">
							<view class="label">摘要：</view>
							<text class="value">{{ currentInfo.description }}</text>
						</view>
						<view class="row">
							<text class="label">标签：</text>
							<view class="value tabs">
								<view class="tab" v-for="item in currentInfo.tabs" :key="item">{{ item }}</view>
							</view>
						</view>
						<view class="copyright">
							声明：本图片来用户投稿，非商业使用，用于免费学习交流，如侵犯了您的权益，您可以拷贝壁纸ID举报至平台，邮箱513894357@qq.com，管理将删除侵权壁纸，维护您的权益。
						</view>
						<!-- 底部安全区域 -->
						<view class="safe-area-inset-bottom"></view>
					</view>
				</scroll-view>
			</view>
		</uni-popup>

		<!-- 评分布局 -->
		<uni-popup ref="scorePopup" type="center">
			<view class="scorePopup">
				<view class="popupHeader">
					<view></view>
					<view class="title">壁纸评分</view>
					<view class="close" @click="clickScoreClose">
						<uni-icons type="closeempty" size="18" color="#999"></uni-icons>
					</view>
				</view>
				<view class="content">
					<uni-rate v-model="userScore" allowHalf :disabled="isScore" disabled-color="#FFCA3E" />
					<text class="text">{{ userScore }}分</text>
				</view>

				<view class="footer">
					<!-- 如果当前登录用户已经评分了或者isScore已经评分了 -->
					<button @click="submitScore" :disabled="!userScore || isScore" type="default" size="mini" plain>确认评分</button>
				</view>
			</view>
		</uni-popup>
	</view>
</template>

<script setup>
import { ref } from 'vue';
import { getStatusBarHeight } from '@/utils/system.js';
import { apiSetupScore, apiDownloadWall, apiDetailWall } from '@/api/apis.js';

const isScore = ref(false);

//遮罩状态
const maskState = ref(true);

//底部弹窗
const infoPopup = ref(null);

//中间的评分弹窗
const scorePopup = ref(null);

const currentItemId = ref(null);
const currentIndex = ref(0);
const currentInfo = ref(null);
const userScore = ref(0);

//记录阅读过的图片下标
const readImgs = ref([]);

//获取缓存数据
const classList = ref([]);
const storageClassList = uni.getStorageSync('storageClassList') || [];
classList.value = storageClassList.map((item) => {
	return {
		...item,
		picurl: item.smallPicurl.replace('_small.webp', '.jpg')
	};
});
console.log(classList.value);

onLoad(async (e) => {
	currentItemId.value = e.id;
	if (e.type == 'share') {
		//查询一条item数据
		let res = await apiDetailWall({ id: currentItemId.value });
		classList.value = res.data.map((item) => {
			return {
				...item,
				picurl: item.smallPicurl.replace('_small.webp', '.jpg')
			};
		});
	}

	currentIndex.value = classList.value.findIndex((item) => item._id == currentItemId.value);
	console.log(currentIndex.value);
	currentInfo.value = classList.value[currentIndex.value];

	//记录产看过的图片下标
	//readImgs.value.push(currentIndex.value)
	//懒加载3张图片
	readImgsFun();
});

//滑动监听
function changeSwiper(e) {
	currentIndex.value = e.detail.current;
	currentInfo.value = classList.value[currentIndex.value];

	//懒加载3张图片
	readImgsFun();
}

//点击图片后更新状态
function maskChange() {
	maskState.value = !maskState.value;
}

//关闭页面
function goBack() {
	uni.navigateBack({
		//返回失败就打开主页，处理分享后返回按钮无效的问题
		fail(err) {
			uni.reLaunch({
				url:"/pages/index/index"
			})
		}
	});
}

//点击info信息
function clickInfo() {
	infoPopup.value.open();
}
//关闭info弹窗
function clickInfoClose() {
	infoPopup.value.close();
}

//打开评分弹窗
function clickScore() {
	if (currentInfo.value.userScore) {
		isScore.value = true;
		userScore.value = currentInfo.value.userScore;
	}
	scorePopup.value.open();
}
//关闭评分弹窗
function clickScoreClose() {
	isScore.value = false;
	userScore.value = 0;
	scorePopup.value.close();
}
//给壁纸打分
const submitScore = async () => {
	//显示Load
	uni.showLoading();

	//解构获取classid和wallId
	let { classid, _id: wallId } = currentInfo.value;
	//提交数据
	let res = await apiSetupScore({
		classid: classid,
		wallId: wallId,
		userScore: userScore.value
	});
	//隐藏loading
	uni.hideLoading();
	if (res.errCode === 0) {
		uni.showToast({
			title: '评分成功',
			icon: 'success'
		});
		console.log(userScore.value);
		//评分过的数据增加 userScore
		classList.value[currentIndex.value].userScore = userScore.value;
		//更新本地缓存数据
		uni.setStorageSync('storageClassList', classList.value);
		//关闭评分的popup
		clickScoreClose();
	}
};

async function clickDownload() {
	// #ifdef H5
	uni.showModal({
		content: '请长按保存图片',
		showCancel: false
	});
	// #endif

	// #ifndef H5
	//显示加载框
	uni.showLoading({
		content: '下载中...',
		mask: true
	});

	try {
		//解构获取classid和wallId
		let { classid, _id: wallId } = currentInfo.value;
		//提交下载记录
		let res = await apiDownloadWall({
			classid,
			wallId
		});
		console.log(res);
		if (res.errCode != 0) throw res.errMsg;

		//获取临时的图片信息
		uni.getImageInfo({
			src: currentInfo.value.picurl,
			success: (res) => {
				//console.log(res);
				//执行保存到相册
				uni.saveImageToPhotosAlbum({
					filePath: res.path,
					success: (result) => {
						uni.showToast({
							title: '保存成功，请到相册查看',
							icon: 'none'
						});
					},
					fail(err) {
						//console.log(err);
						//用户取消了下载
						if (err.errMsg == 'saveImageToPhotosAlbum:fail cancel') {
							uni.showToast({
								title: '保存失败，请重新点击下载',
								icon: 'none',
								duration: 2500
							});
							return;
						}
						//重新获取授权
						uni.showModal({
							content: '需要授权保存到相册',
							title: '授权提示',
							success(res) {
								if (res.confirm) {
									uni.openSetting({
										success: (setting) => {
											console.log(setting);
											if (setting.authSetting['scope.writePhotosAlbum']) {
												uni.showToast({
													title: '获取授权成功',
													icon: 'none'
												});
											} else {
												uni.showToast({
													title: '获取授权失败',
													icon: 'none'
												});
											}
										}
									});
								}
							}
						});
					},

					complete() {
						uni.hideLoading();
					}
				});
			}
		});
	} catch (err) {
		console.log(err);
		uni.hideLoading();
	}
	// #endif
}

//分享朋友
onShareAppMessage((res) => {
	console.log(res);
	return {
		title: '谊康壁纸-好看呀',
		path: `pages/preview/preview?id=${currentItemId.value}&type=share`
	};
});

//分享朋友圈
onShareTimeline(() => {
	return {
		title: '谊康壁纸',
		query: 'id' + currentId.value + 'type=share'
	};
});

function readImgsFun() {
	readImgs.value.push(
		currentIndex <= 0 ? classList.value.length - 1 : currentIndex.value - 1,
		currentIndex.value,
		currentIndex >= classList.value.length - 1 ? 0 : currentIndex.value + 1
	);
}
</script>

<style lang="scss" scoped>
.preview {
	width: 100%;
	height: 100vh;
	position: relative;
	swiper {
		width: 100%;
		height: 100%;
		image {
			width: 100%;
			height: 100%;
		}
	}
	.mask {
		//抽取mask子组件中相同的属性
		& > view {
			color: #fff;
			//下面4个属性的组合可以这让定位元素居中
			position: absolute;
			left: 0;
			right: 0;
			width: fit-content;
			margin: auto;
		}
		.goBack {
			width: 38px;
			height: 38px;
			background: rgba(0, 0, 0, 0.5);
			left: 30rpx;
			margin-left: 0;
			border-radius: 100px;
			top: 0;
			backdrop-filter: blur(10rpx);
			border: 1rpx solid rgba(255, 255, 255, 0.3);
			display: flex;
			align-items: center;
			justify-content: center;
		}
		.count {
			top: 10vh;
			background: rgba(0, 0, 0, 0.5);
			font-size: 28rpx;
			padding: 8rpx 28rpx;
			border-radius: 40rpx;
			backdrop-filter: blur(10rpx);
		}
		.time {
			font-size: 140rpx;
			top: calc(10vh + 80rpx);
			line-height: 1em;
			font-weight: 100;
			text-shadow: 0 4rpx rgba(0, 0, 0, 0.3);
		}
		.date {
			font-size: 34rpx;
			top: calc(10vh + 230rpx);
			text-shadow: 0 2rpx rgba(0, 0, 0, 0.3);
		}
		.footer {
			background: rgba(255, 255, 255, 0.8);
			bottom: 10vh;
			width: 65vw;
			height: 120rpx;
			color: #000;
			border-radius: 120rpx;
			display: flex;
			justify-content: space-around;
			align-items: center;
			box-shadow: 0 2rpx 0 rgba(0, 0, 0, 0.1);
			backdrop-filter: blur(20rpx);
			overflow: hidden;
			.box {
				padding: 3rpx 12rpx;
				display: flex;
				flex-direction: column;
				align-items: center;
				justify-content: center;
				.text {
					font-size: 26rpx;
					color: $text-font-color-2;
				}
			}
		}
	}
	.popupHeader {
		display: flex;
		justify-content: space-between;
		align-items: center;

		.title {
			color: $text-font-color-2;
			font-size: 26rpx;
		}

		.close {
			padding: 6rpx;
		}
	}
	.infoPopup {
		background: #fff;
		border-radius: 30rpx 30rpx 0 0;
		padding: 30rpx;
		overflow: hidden;

		scroll-view {
			max-height: 60vh;
			.content {
				.row {
					display: flex;
					padding: 16rpx 0;
					font-size: 32rpx;
					line-height: 1.7em;
					.label {
						color: $text-font-color-3;
						width: 140rpx;
						text-align: right;
						font-size: 30rpx;
					}
					.value {
						flex: 1;
						width: 0;
					}
					.roteBox {
						display: flex;
						align-items: center;
						.score {
							font-size: 26rpx;
							padding-left: 10rpx;
							color: $text-font-color-2;
						}
					}
					.tabs {
						display: flex;
						flex-wrap: wrap;
						.tab {
							border: 1rpx solid $brand-theme-color;
							color: $brand-theme-color;
							font-size: 22rpx;
							padding: 10rpx 30rpx;
							border-radius: 40rpx;
							line-height: 1em;
							margin: 0 10rpx 10rpx 0;
						}
					}
					.class {
						color: $brand-theme-color;
					}
				}
				.copyright {
					font-size: 28rpx;
					padding: 20rpx;
					background: #f6f6f6;
					color: #666;
					margin: 20rpx;
					line-height: 1.6em;
				}
			}
		}
	}
	.scorePopup {
		background: #fff;
		padding: 30rpx;
		width: 70vw;
		border-radius: 30rpx;

		.content {
			padding: 30rpx 0;
			display: flex;
			justify-content: center;
			align-items: center;

			.text {
				color: #ffca3e;
				padding-left: 10rpx;
				width: 80rpx;
				line-height: 1em;
				text-align: right;
				font-size: 28rpx;
			}
		}

		.footer {
			padding: 10rpx 0;
			display: flex;
			align-items: center;
			justify-content: center;
		}
	}
}
</style>
